Tabby's Star, or KIC 8462852, took the internet by storm when it was speculated that it could be the home of an alien megastructure. But recent research seems to shed more light on the mystery.
Check out the TED talk by Tabetha Boyajian here:
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Seeker on Tabby's Star:
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SPACE — Scientists say they now have an explanation for why Tabby's Star flickers — space dust.
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New Data on Tabby's Star - Just a Dust Bowl?

Tabby's Star (aka Boyajian's Star) is back in the news with some new data published by the original discoverers. Finally we are starting to get a sense as to what might be going on around this star, with dust emerging as a leading hypothesis. Is the alien megastucture hypothesis excluded now? Where did the dust come from? How can we confirm this idea? We get into all of this in our first video of 2018 - Happy New Year!
::More about this Video::
► Tabby's Star CoolWorlds Playlist: http://bit.ly/TabbysStar
► Boyajian et al. (2018), "The First Post-Kepler Brightness Dips of KIC 8462852": https://arxiv.org/abs/1801.00732
► Metzger, Shen & Stone (2017), "Secular Dimming of KIC 8462852 Following its Consumption of a Planet": https://arxiv.org/abs/1612.07332
► Boyajian et al. (2016), "Planet Hunters X. KIC 8462852 - Where's the Flux?": https://arxiv.org/abs/1509.03622
► Live Q&A on Cool Worlds with Tabby Boyajian: https://youtu.be/k_-6SEb2QlM
► Cool Worlds video "What is an Alien Megastructure?" at https://youtu.be/tYHVCW3BkHU
► Jason Wright's Cool Worlds video, "The Most Mysterious Star": https://youtu.be/jjh0oK7ZyfM
► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu
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What astronomers really think is causing Tabby's star to flicker

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Dust Might Be Causing Mysterious Star to Dim

A new study published in The Astrophysical Journal Letters suggests whatever is passing in front of a mysterious star some 1,500 light-years from Earth is not solid and therefore might be a cloud of dust.

The mystery of the "alien megastructure" star may finally be settled. In 2015, a rumor spread about the star KIC 8462852.
It was proposed that the star might harbor an alien race. The rumor stemmed from the star's unusually unstable brightness. One explanation for the behavior was an alien megastructure called a "Dyson swarm." Now, that possibility has been ruled out.
So, what's actually going on? To find out, scientists used telescopes in space and on the ground. They observed the star in wavelengths invisible to the human eye. What they saw couldn't be explained by a Dyson swarm.
When the star dimmed, it dimmed more in the ultraviolet than in the infrared.
This wouldn't be possible with a Dyson swarm because the Dyson swarm would block all light equally. Instead, it's likely a cloud of dust orbiting the star every 700 days. This would explain the long-term dimming of the star over years.
But there's still more research needed. There's also short-term, daily dimmings from this star.
The scientists aren't sure yet if a dust cloud can explain both. Either way, we can now say with more certainty than ever. It's not aliens.
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Alien Megastructure Potentially Discovered Orbiting Tabby’s Star

Alien megastructure potentially discovered orbiting Tabby’s Star. Spaceships and aliens are concepts of which many people are generally aware, but it is likely few have heard about the idea of a theoretical alien megastructure that can harness the power from a star and convert it into energy. Watch to learn more.
Do you think Dyson Spheres exist? Tell us in the comments below. If you enjoyed the video please hit that like button. Also, remember to subscribe for more videos just like this one.
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http://ufos-wilson.blogspot.com/2017/07/modelo-explica-o-ciclo-de-11-anos-do-sol.html
http://cosmology.com/KIC8462852AlienLight.html
http://bigthink.com/robby-berman/a-mysterious-signal-was-likely-generated-by-the-military-or-aliens
https://commons.wikimedia.org/wiki/File:System-F6-Satellite_formation_landscape.jpg

We’re STILL Not Saying It’s Aliens, But Tabby’s Star Is Getting Weirder

The light from KIC 8462852 faded again, and scientists have some new theories about what's behind astronomy's most mysterious star.
We're Not Saying The Kepler Discovery Is Aliens, But... - https://youtu.be/8V-TxYyyLI4
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Read More:
Astronomers Have a New Explanation For The 'Alien Megastructure' Star
https://www.sciencealert.com/astronomers-have-a-new-explanation-for-the-alien-megastructure-star
"Strange dips in the light from Tabby's Star have been puzzling scientists since 2015, with some hopefuls refusing to rule out the chance that some kind of "alien megastructure" could be blocking the way."
Astronomers Identify the Origin of Peculiar Signals From Nearby Red Dwarf Star
https://www.seeker.com/space/astronomy/astronomers-identify-the-origin-of-peculiar-signals-from-nearby-red-dwarf-star
"Astronomers have finally solved the mystery of peculiar signals coming from a nearby star, a story that sparked intense public speculation this week that perhaps, finally, alien life had been found."
Do Stars Vanish Into a Black Hole or Crash Against a Surface? A New Test Answers
https://www.seeker.com/space/astronomy/do-stars-vanish-into-a-black-hole-or-crash-against-a-surface-a-new-test-answers
"Einstein's theory of general relativity says that all black holes have an event horizon where nothing, not even light, can escape the gravitational pull of these extremely dense objects.
But some have cast doubt about the existence of these event horizons."
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"Tabby's star" The Most Mysterious star ever found

Strange behavior of a stars named "Tabby's Star" as variation in brightness is a uncommon phenomena which also indicates the presence of a Dyson Sphere that surrounds the tabbys star and indicates sign of intelligent alien life.

Tabby's Star (3/3)

Tabby’s star is located 1280 light years away, and is one of the many stars that the Kepler Space Observatory has been studying for many years and unexpectedly in the past few years, we noticed that there were some very strange dips in its brightness. In this video, we discuss Tabby's star, what happened over the years and some possble explanations for the event.
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If you want to read more:
https://www.newscientist.com/article/2131871-astronomers-scramble-as-alien-megastructure-star-dims-again/
https://www.sciencealert.com/astronomers-have-a-new-explanation-for-the-alien-megastructure-star
https://en.wikipedia.org/wiki/KIC_8462852
https://www.nasa.gov/mission_pages/kepler/main/index.html
https://en.wikipedia.org/wiki/Kepler_(spacecraft)
Music:
“Cylinder Five” by Chris Zabriskie
Credit:
Transit Animation: https://youtu.be/hBU1yFbGHB8
Graphs: https://youtu.be/gypAjPp6eps

The Search for Habitable Exoplanets in our Galaxy
Exoplanets are planets that orbit stars other than the Sun. The first exoplanets were discovered in the 1990's, and thanks to many ground-based observatories and space-based telescopes the number of these worlds we are aware of is now rapidly approaching 3,500. This talk will introduce the methods through which we find these distant planets, determine if they could be habitable, and how we look for evidence of life using biosignatures.
Andrew Rushby studies planetary habitability and the early environment of the Earth as a postdoctoral fellow at NASA Ames Research Center. He is also a member of the Kepler/K2 science office and supports the NASA Nexus for Exoplanet System Science (NExSS) research network to identify and understand habitable environments and the distribution of life across the Galaxy.
Tabby's Star: Comets or Alien Structure? by Christina Hedges
Could this be the strangest star in the Galaxy? Using data from the Kepler Space Telescope and the efforts of citizen scientists across the world, it was discovered that this distant star behaves very unusually. Boyajian's star is quiet and not unlike our own sun, but occasionally over the course of 3 years, the star misbehaves. It shows large, frequent changes in brightness that astronomers believe are due to an unknown object briefly passing between us and the star. As recently as May 2017 the star was observed to dip again, giving us a chance to reopen the mystery of what could be causing these events. In this talk I will discuss some of the possible causes for this strange behavior, with new and exciting results from our recent campaign designed to finally solve this puzzle.
Christina Hedges has recently finished her PhD at the University of Cambridge, UK and is now moving to join the K2 GO office at NASA Ames. She primarily researches exoplanet atmospheres and variability in dusty young stellar objects. Christina is an observational astronomer using data from the Hubble Space Telescope, Kepler and K2 to learn more about exoplanets.

Here's an hour-long live QA with Fraser.
In this episode we talk a lot about the colonization of Mars, and what are the ethical considerations of contaminating the world. What's happening with Tabby's Star? Will China beat the US to the Moon? And many more topics. It's like three QA shows all mashed together. We did it LIVE!

Read the related CNET article here - http://cnet.co/2rRA9O6
There's still no solid explanation on why "Tabby's Star" varied in brightness over the past few days. It could have been a planet or some kind of alien structure for all we know.
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The ‘alien megastructure’ star is acting weird again

Tabby's Star — officially known as KIC 8462852 — is acting weird, again. Recent reports indicate it has started to dim in brightness. That's what Tabby's star does — it dims.
Astronomers were ready for the event — they have pointed telescopes from around the world at the star and are currently collecting as many different wavelengths of light as they can.
The thing that makes Tabby's star unusual, is how much it dims — sometimes up to 20%. That's an enormous amount. If our sun dimmed that much, life on Earth would be very different from what it is today.
In fact, Tabby's star is so unusual that none of the regular explanations can describe it. That's what led one astronomer to suggest that aliens might be the reason.
A type of alien megastructure, called a Dyson swarm, could — in theory — explain Tabby's unusual dimming behavior. Most experts agree that aliens are always the last possible answer to any weird observations seen in space.
But until they can disprove this theory, Tabby's star will remain an enigma. These new observations could be exactly what astronomers need to solve the mystery.
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Tabby's Star is dimming right now (archived video of chat with Jason Wright)

Tabby's Star (aka the WTF Star, Boyajian's Star, the Most Mysterious Star in the Universe) is entering another of its irregular dips. Here at UC Berkeley SETI we're lucky to have Prof. Jason Wright visiting this week. Join him and Berkeley SETI Director Dr. Andrew Siemion at 11 Pacific for live updates. Tweet your questions @BerkeleySETI.

Comet Swarms or Alien Megastructures? The Strange Variations of the Star KIC 8462852

A star with unusual changes in brightness was discovered the Kepler Mission Planet Hunters.
This star is called KIC 8462852 or "Tabby’s star" and has strange irregular dips in brightness and also seemed to be getting fainter over the last 4 years. The object is slightly brighter than the Sun and is more than 1400 light years away. The variations and dimming are hard to explain. One idea is that a swarm of comets has been disrupted near KIC 8462852 causing variable eclipses of the star. Other explanations have been proposed including the presence of a massive astro engineering project or megastructure constructed by aliens.
Besides numerous follow up studies using a variety of telescopes, the scientists at the SETI institute were very interested in investigating the latter idea and studied the star using the Allen Telescope Array for radio frequencies and several other facilities for optical observations.
What is the cause of KIC 8462852’s strange behavior? Tune into the Afternoon Astronomy Coffee Hangout to find out!
NOTE: During this hangout we will be observing KIC 8462852 (Tabby's Star), so people can look at http://setiquest.info.
Link to article discussed in hangout:
http://iopscience.iop.org/article/10.3847/0004-637X/825/2/155/meta;jsessionid=C6F6ED977A234208A1677CC8703DAFF9.c4.iopscience.cld.iop.org
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Jill Tarter, Allen Telescope Array, Tabby's Star

Jill Tarter explains how SETI Institute used the Allen Telescope Array to search “Tabby’s Star” for signals of technological life.
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BSRC Director Dr. Andrew Siemion is joined by Louisiana State Professor Tabetha Boyajian and Penn State Professor Jason Wright for a live chat from the Green Bank observatory about their observations of Tabby's Star. Tweet your questions to us ahead of time @BerkeleySETI or tune in here on October 26 1pm Pacific / 4pm Eastern.

In 1960 two seminal papers in SETI were published, providing two visions for SETI. Giuseppe Cocconi and Philip Morrison’s proposed detecting deliberate radio signals ("communication SETI"), while Freeman Dyson ("artifact SETI"), proposed detecting the inevitable effects of massive energy supplies and artifacts on their surroundings. While communication SETI has now had several career-long practitioners, artifact SETI has, until recently, not been a vibrant field of study.
The launch of the Kepler and WISE satellites have greatly renewed interest in the field, however, and the recent Breakthrough Listen Initiative has provided new motivation for finding good targets for communication SETI. Dr. Wright will discuss the progress of the Ĝ Search for Extraterrestrial Civilizations with Large Energy Supplies, including its justification and motivation, waste heat search strategy and first results, and the framework for a search for megastructures via transit light curves. The last of these led to the identification of KIC 8462852 (a.k.a. "Tabby's Star") as a candidate ETI host. This star, discovered by Boyajian and the Zooniverse Planet Hunters, exhibits several apparently unique and so-far unexplained photometric properties, and continues to confound natural explanation.

Tabby's Star

A in-depth look at KIC 8462582, also known as Tabby's Star. We'll explore how this star became famous for an anomaly, what that anomaly was, and the various theories for what might be causing it.
Listen or Download the audio of this episode from Soundcloud:
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Recent Developments:
5 Aug 2016
Some new research came out the same day as the video, in terms of the overall dimming, Paul Gilster discusses it here, and Centauri Dreams is an excellent place to keep up on new developments as they occur:
http://www.centauri-dreams.org/?p=36081

The most mysterious star in the universe | Tabetha Boyajian

Something massive, with roughly 1,000 times the area of Earth, is blocking the light coming from a distant star known as KIC 8462852, and nobody is quite sure what it is. As astronomer Tabetha Boyajian investigated this perplexing celestial object, a colleague suggested something unusual: Could it be an alien-built megastructure? Such an extraordinary idea would require extraordinary evidence. In this talk, Boyajian gives us a look at how scientists search for and test hypotheses when faced with the unknown.
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Watch the talented Reggie Watts perform at the Exploratorium August 9th, 2012. Reggie was at the Exploratorium for an Osher Fellowship, and he graciously joined us at the end of a live webcast on Mars to share a little of his own feelings about the red planet!

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